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G. R. PEARE. SHOE SEWING MACHINE.

No. 533,665. Patented Feb. 5, 1895.

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lhvrrnn STATEs ATENT ritten` GEORGE R. PEARE, OF LYNN, MASSACHUSETTS,ASSIGNOR TO THE STEAM HEATED HORN COMPANY, OF PORTLAND, MAINE, ANDBOSTON,\MASSA CHUSETTS.

SHOE-SEWlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 533,665, dated February5, 1895. Apprenti ne@ rerum 5,1894. sem mineure. fr@ man.)

To a/Z whom t may concern:

Be it known that I, GEORGE R. PEARE, of Lynn, in the county ot' Essexand State of Massachusetts, have invented certain new and usefulImprovements in Steam-Joints for Shoe-Sewing Machines, of which thefollowing is a specification.

rlhis invention relates to an improved construction of steam-jointforuse between the rotary horn of a shoe-sewing machine of the McKaytype and its support, whereby steam may be conducted to the horn andwax-pot after the manner disclosed in Patent No. LlO5,592, granted to me.Tune 19, 1889.

One object of the present invention is to provide a construction wherebythe weight of the horn may be utilized to maintain the jointsteam-tight.

Another object is to effectually prevent aocess of the drip ofcondensation to the gear on the whirl-driving spindle.

A further object is to provide for lubricating the bearings by means ofthe condensation.

To the above ends, the invention consists in the novel construction andarrangement of parts hereinafter described and claimed.

The invention is illustrated in the accompanying drawings.

Figure l shows a vertical section of the joint and parts of ashoesewingmachine with which itis connected. Fig. 2 shows a crosssection of thefemale member of the joint. Fig. 3 shows a bottom plan view of the malemember'. Fig. 4 shows a side elevation of the male member. Fig. 5 showsa plan ot' the female member.

The letter ct designates the supporting arch ot the frame of themachine; b, the hollow sha-nk of the horn; and c, the spindle whichtransmits motion to the whirl, said spindle extending vertically throughthe arch and carrying a bevel-pinion, c', below the same, to receivemotion from the driving means.

The parts above enumerated are common to shoesewing machines of theMcKay type, to which my invention is applicable.

A sleeve, CZ, is fitted tightly in the arch, a, and extends verticallytherethrough and projects above the same. Said sleeve surrounds thespindle, c, and has a bushing, c2, at the lower end, forming a bearingfor said spindle. An extension, d', of the sleeve, thinner than thesleeve itself, extends upward therefrom and forms a shield to preventcondensation which collects in the hollow shank from passing down alongthe spindle to the gear on the lower end of the same, and being thrownabout by said gear.

The letter e designates the fem ale member or socket of the steam-joint,which seats on the arch, a, and is held from turning by pins, e. Saidmember, e, has a central opening to accommodate the sleeve, d, and isrecessed in the under side around said opening, as at e2, to receivepacking, e5, and a ring, e4, forming a steam-tight joint around thesleeve. The memberc has a central boss which is recessed in the upperside at the middle, so as to form a series of annular seats, e5, e6, e7,around the sleeve rising one above the other, as steps, and is furtherrecessed outside the central boss, to form a cup, es, in whichcondensation may accu mulate and from which it may escape through apipe, e9. Ports, f and f', extend ont of the vertical walls, f2, and f3,which rise from the annular seats, e5 and e, respectively, and asteam-supply pipe, g, enters the member, e, and communicates with theport, f, and an exhaust-pipe, g' enters the opposite side ot' themember, e, and communicates with the port,f. lA shell, h, is mounted onthe member, e, and forms an upward extension ot the cup,'e8.

The male member, c', ol the steam-joint is formed with a series ofannular stepped shoulders, fi", i2, 113, which rest on the seats, e5, e,ci, respectively, of the female member. In the portions of the malemember extending between the shoulders, t" and i2, and t2 and i3,annular passages, it, and t5, are made and communicate respectively withthe ports, f and f Passages, if and il, extending through the member,c', connect the passa-gest"1 and t5, respectively with pipes j and j',fastened in arms of the member, i, and one,j, adapted to conduct steamto the horn and the other, j', adapted to return the steam andcondensation.

The horn-shank, h, seats in a recess in the upper side of the membergzl,and is prevented from turning therein by a pin, 7c. The horn is fittedwith a bushing, 7a', which closely sur- IOO the following provisions:the passage, iisv extended in halt" its crosssectional area (see :o Fig.3) downto the seat, e5, and lsaid passage emerges from the shoulder, t2,in its full crosssectional area, and thus extends partly over the seat,e6. vThe passage, il, is extended in half its cross-sectional area downto the seat,

v e6, and extends over that part ofthe latter not covered by thepassage, i, vSaid passage, 7,

vemerges in its full cross-sectional area from the shoulder, t3, andthus extends partially over the seat, e?. The remainder of said seat cevis covered by a notch, m, in the shoulder, t3.

'Ihat part of the lowest seamei, not covered by the passage, di, isprovided for 'by a groove,

m', extending along the bore of the member,

fi, and through the bushing, le', and allowing lubricant to pass downfrom the interior of the horn to the lower seat It will now be seen thatprovision is made forlubricating the bearings throughout all theirlateral extent.

Condensation, which might work itself between the joint-members and thesleeve, d,

v would be prevented from passing down along the sleeve by the packing,e3, vand would bev obliged to rise along the sleeve and enter the vvhollow horn, from whichv it would "be disa charged through a passage, n,into the cup, es.v In the operation ofthe'machine, steam en teringthrough the pipe, g, passes into the annular passage, t4, and traversesthe same un- 4o til it iinds the passage, t6, through which itisconducted to the pipe,j, and therethrough to the horn. The steam andcondensation return from the horn through the pipe, j', the

passage, t7, the annular passage, t5, the port, f', and ripe g- It is tobe understood that the invention is not limited to the structure hereshown, but is capable of embodiment in other forms.

Having thus described my invention, what 5o I claim as new, and desireto secure by Letters Patent, is

l. In a shoe-sewing machine, the combination with a rotary horn, of astepped bearing therefor of steam joint comprising a female memberhaving a series of annular stepped seats and steam inlet and outletports in the walls extending from the seats respectively, and a malemember having stepped annular shoulders fitting the seats of the femalemember, annular passages in the walls extending ssaeee from saidshoulders, said passages communieating withv the inlet and outlet portsrespectively, and steam supply and exhaust passages communicating withsaid annular passages re t spectively. v v

2. In a shoe-sewing machine, the combinav tion with a rotary horn, of astepped bearing therefor of steam joint comprising a female memberhaving a series of annular stepped seats and steam inlet and outletports in the walls'extending from the seats respectively, and a malemember having stepped annular shoulderstttingthe seats of the femalemernber, annular passages in the walls extending from said shoulders,said passages communicating with the inlet and outlet portsrespectively, and steam supply and exhaust passages communicating withsaid annular passages respectivelyreoo'mmunicationsbeing providedbetween said passages and the annular seats and shoulders for purposesoflubrication, substantiallyas described. 'v v 3. The combination, withtherotary hollow horn-shank and the whirl-driving spindleextending'therethrough, of a fixed' sleeve surrounding said spindle andextending up into the horn-shank, and a steam-joint comprising twomembers surrounding saidsleeve, one being stationary andthe otherarranged to rotate'with the horn-shank.

4. The combination of a tixed support, a sleeve aixed therein andprojecting upward therefrom,'a whirl-driving spindle extending throughsaid sleeve, a socket or female mem-v her of a steam-joint `surroundingthe sleeve and affixed tothe support, said socket having stepped seatsand steam inlet and outlet ports above the seats, respectively, packinginterposed between said socket and the sleeve, a male member of thesteam-joint stepped to fit the female member and having annular passagescommunicating with the ports thereof, and steam supply and exhaustpassages communicating with the annular passages and connecting withpipes which extend to the horn, a hollow horn-shank surrounding theupward projecting portion of the sleeve and IOO aflixed to the malemember ot' the steam-joint,

and a cup supported by the female member of the joint and surroundingthe lower portion of the horn-shank.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 26th day of January, A. D.1894:.

GEO. R. PEARE.

Witnesses:

F. P. DAvIs, ARTHUR W. CRossLEY.

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